the right to correct his difficult question，the teacher of English was pleased and praised me in front of the class.
A. Having given
B. Having been given
C. To be given
D. Giving
网友回答
A. Having given
(答案→)B. Having been given
C. To be given
D. Giving
解析：考察非谓语动词。本题中的动词give与后面句子主语the teacher之间构成被动关系，所以使用过去分词，而且该动作是已经发生的，所以使用完成式。句意：被给与权力来修改他那个很难的问题，这位英语老师很高兴并当众表扬了我。Having been done更多强调的是已经完成，而不是被动。故B正确。